Oh, it pertains to a game. Nevermind then.
I'm fairly sure I already did that in exchange for math powers. We agreed upon an escalation clause to factor in the incremental cost of thinking as I progress in my career, but the surrender of my soul was an absolute single instalment.
That may be why I can't be really satisfied with anything anymore, and can only inexorably think of what next to do. The devil and I both know this, and that even as I achieve more and more I'll be less and less satisfied until death. Fair deal, really, he can get his kick of schadenfreude out of me, plus the fixed deposit of my soul on which he accrues interest, and I am okay with sacrificing pleasure on the altar of gain, nevermind the slow death by stress, coffee overload and the loss of my hobbies.
What about you? Same question.